Improved windlass



UNITED STATES PATENT FEICE.

PETER H. JACKSON, OF NEW YORK, N. Y.

IIVIPROVED WINDLASS.

Specification forming part of Letters Patent No. 41,222, dated January 12, 1864.

To all whom it may concern.-

Be it known that I, PETER H. JAcKsoN, of the city and State of NewYork, have invented, made, and applied to use a certain new and useful Improvement in Ships Windlasses; and I do hereby declare the following to be a full, clear, and exact description of the said invention, reference being had to the annexed drawings, making part of this specification, wherein- Figure l is an elevation of my windlass, and Fig. 2 is a cross-section of the same at the line w x.

Similar marks of reference indicate the same parts.

The nature ot' my said invention consists in the combination of a chain -Wheel with a double chain-purchase connecting the Walking-beam to the windlass pawl-lever, by-which device the chain can be drawn in at a faster or slower speed, according to the weight of the anchor or the number of men actuating the walking-beam.

In the drawings, a a are the windlass bits sustaining the shaft b of the windlass. c is a center bit, termed the samsonpost,7 on each side of which are the ratchet-wheels d, firmly attached to the shaft b;- and e e are the pawls to these ratchet-wheels, hanging from the Samson-post c. ff are the pawl-levers of the windlass, grasping the ratchet-wheels d.

The parts thus far being of a well-known character require no further description.

gg are chain-wheels that are free to turn on the shaft b, but can be firmly connected to and rotated by keys or pins t' i, that are placed through iianges adjoining the ratchetwheels d, or any other device may be employed for connecting or disconnecting the chainwheels g and ratchet-wheelsf. At the ends of the pawl-leversf sheaves are introduced, as

seen at 72 and 7c is a walking-beam or brake on a fulcrum, Z, upon the samsonpost c, and

the walking-beam, and the other chain with one end hooked to the eye n. In the former case the pawl-lever f will be moved at its outer end the same distance as the walkingbeam at the point where the chain is attached, while in the latter inst-ance the power will be doubled, because the pawl-lever will only move half the distance of the walking-beam, the chain drawing off the moving pulley h. Byl this arrangement the chain cable passing around either or both chain-wheelsgg can be drawn in faster or slower, according to the available power applied to the walking-beam or brakes.

The pawl-leverfmay be tted to clutch into grooves in the sides of the ratchet-Wheel, or be formed as an eye surrounding the shaft b.

finch-heads o o may be applied at the outer ends of the windlass-shafts.

Vhat I claim, and desire to secure by Letters Patent, is

The combination or" the chain-wheelsgg, ratchet-wheels d d, pawl-levers ff, walkingbeam or brake 7c, and chain connection m, forming a double or single purchase, as and for the purposes specified.

Dated December 3, A. D. 1863.

PETER H. JACKSON.

Vtnesses:

GHAs. H. SMITH, Trios. GEO. HAROLD. 

